Finding the Third Proportional to 757,978 and 1,108,690

Step by Step Solution

1. Step 1: Write the proportion equation
   757,978 : 1,108,690 = 1,108,690 : x
2. Step 2: Convert to fraction form
   757,978/1,108,690 = 1,108,690/x
3. Step 3: Cross multiply
   757,978x = 1,108,690 × 1,108,690
4. Step 4: Simplify right side
   757,978x = 1,229,193,516,100
5. Step 5: Solve for x
   x = 1,229,193,516,100/757,978
6. Step 6: Final answer
   x = 1,621,674.40